Trolley-wire connector.



G. P. MCDONALD. TROLLEY WIRE CONNECTOR. APPLIGATION IILEDMAY 11, 1914.

Patented Jan. 19, 1915.

2 SHEETS'flHEET 1.

Qn'uemfob aRMcDonaldd THE NORRIS PETERS C0, PHOTG-'LITHO., WASHINGTON.D. L

O. P. MCDONALD.

TROLLEY WIRE CONNECTOR.

APPLICATION FILED MAY 11, 1914,

1, 125,859. Patented Jan. 19, 1915.

2 SHEETS-SHEET 2.

Z] YVU 214 for UIPIMQDORZdJ THE NORRIS PETERS CO PHUTOJ-ITHOHWAsHINGTDN. D) C,

i UNITED STATES PA E cr mes.

CHARLES P. MCDONALD, OF GRAND JUNCTION, GOLCRADO.

TRoLLEY-wmn CONNECTOR.

i Specification of Letters Patent- Patented Jam 19,1915.

' Application filedMay 11,1914. Serial Ira-837,921;

To an whom it may concern Be it known that 1, CHARLES ALD, a citizen ofthe United States, residing at Grand Junction, in the county of Mesa andState of Colorado, have invented certain new and useful Improvements inTrolleyire Connectors, of which the following is a specification.

This invention relates to trolley w re connectors, and one of theprincipal ob ects of the invention is to provide a device of simpleconstruction which will yield and contract to compensate for theexpansion and contraction of a trolley wire during the changes intemperature between day and night.

Another object of the inventlon is to provide a trolley wire connectoradapted to be supported upon the disconnected ends of a trolley wirebetween the poles for takmg up the slack when the wires are expanded andfor yielding to the action of the wires when they contract.

These and other objects may be attained by means of the constructionillustrated. in the accompanying drawings, in which Figure 1 is a sideelevation of a trolley wire connector made in accordance with thisinvention and oneof the anchor members being omitted, Fig. 2 is a topplan view of the two sliding connector bars looking at the bottom of thedevice shown in Fig. 1, Fig. 3 is a detail vertical section through oneof the posts and springs, Fig. 4 is a detail view showing the manner ofconnecting the two sliding members together at their ends. Fig. 5 is adetail section showing the manner in which one end of the trolley wireis connected to one of the feet of one of the posts, Fig. 6 is a sideelevation of a connector for messenger or span wires, and Fig. 7 is adetail section taken on the line 77 of Fig. 6.

Referring to the drawings, the numeral 1 designates the slidingconnector members which overlap at their ends centrally and are providedwith curved guide members 2, said guide members being connected to oneof the sliding members 1 by means of set screws 3 which extend throughthe guides 2 and into one of the members 1, as shown more clearly inFig. 4. Formed upon the outer ends of the members 2 are the uprightposts 4, and extending through said posts near their outer ends is a bar5 provided with a hanger 6.

through said posts,

Extending through the posts 4 at 5 points between the bar 5 and themembers 1 is a rod 7 having screw threaded ends 8. Said rod is providedwith encircling springs 9, which springs hear at one end against thepost 4 and at the opposite end against an adjusting nut 10.

Eye bolts 11 are secured to the posts 1 and connected to each of the eyebolts is an anchor rod 12, only one of which is shown in Fig. 1, but itwill be understood that one is to be used upon either side connected toeach of the bolts. Connected to the trolley wires 13 are the anchorplates 14 and the anchor rods 12 extend from the anchor 14 to the eyebolts 11, and said eye bolts are adapted to be adjusted by means of thenuts 15. The trolley wires 13 are secured in the clamp 16 by means ofbinding screws 17. A jumper for trolley connections 18 is wound spirallyaround the rod 17 and connected at its ends to the post 4 adjacent theterminal ends of the trolley wires 13.

Referring to Fig. 6 which shows the construction used for messengerwires which does not require the members 1 for the trolley wheel, theposts 4 are spaced apart by means of the rod 7 and the nuts 1O mountedon the threaded ends of said rod. The messenger wires 13 are connectedat their ends to eye bolts 14 adjusted to the posts 1 by nuts 15, andthe anchor members 17 a are connected by eye bolts 18 to the anchors 19,while the suspension bar or rod 20 is provided with a centrally disposedhanger 6.

From the foregoing it will be obvious that the springs 9 will compensatefor any expansion or contraction of the trolley wires, and the members 1will slide in and out to give and take with the expansion andcontraction. The expansion bar 5 will also slide in the posts 1, thustaking up the slack in the trolley wire and to give to the contractionof the same.

Various changes may be made in the details of construction withoutdeparting from the spirit and scope of the invention as defined in theclaims.

What is claimed is 1. A trolley wire connector comprising slidingmembers, posts on said members, a rod extending through said posts, andadjusting nuts, a suspension bar sliding freely trolley wire endsconnected to said posts, means for holding said wires in connection withsaid posts, and a jump Wire spirally Wound around said sion bar mountedto slide through said spring rod and connected to said posts. posts.

2. A trolley wire connector comprising In testimony whereof I afiixmysignasliding members, posts on said members a ture in presence of twoWitnesses.

rod extending through said posts and pro- CHARLES P. MCDONALD. videdwith spiral springs, a suspension bar Witnesses: sliding freely throughsaid posts, anchoring J OHN F. BILLIG, devices for the trolley ends anda suspen- O. O. FELLoWs.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of IPatents, Washington, D. C.

